The Cd(II) ion in the title compound, [CdBr(2)(C(13)H(19)N(3)O)], is five-coordinated by the N,N',N''-tridentate Schiff base ligand and two Br atoms in a distorted square-pyramidal geometry. In the crystal, inter-molecular C-H⋯O and C-H⋯Br hydrogen bonds link adjacent mol-ecules into layers parallel to the ab plane. An intra-molecular C-H⋯Br inter-action is also observed.
The title compound, [Cd(2)(NCS)(4)(C(8)H(8)N(2))(4)], is a centrosymmetric dinuclear cadmium(II) complex in which each two metal ions are linked by a pair of thio-cyanate N:S-bridges. Two 2-methyl-benzimidazole N-atom donors and one terminal thio-cyanate N atom complete a highly distorted square-pyramidal geometry around the Cd atom. In the crystal structure, two N-H⋯S hydrogen-bonding inter-actions occur, resulting in a three-dimensional polymeric structure. The apical 2-methyl-benzimidazole ring and its symmetry-related counterpart are arranged in an anti-parallel manner with a centroid-centroid separation of 3.6050 (14) Å, indicative of a π-π inter-action.
The environment at the Sn(IV) atom in the title compound, [Sn(C(6)H(11))(2)(C(18)H(11)BrN(2)O(3))], is distorted trigonal-bipyramidal, with the two cyclo-hexyl groups and the imino N atom forming the equatorial plane. The axial O-Sn-O angle is 155.97 (9)°. The presence of an intra-molecular O-H⋯N hydrogen bond in the Schiff base ligand helps to stabilize the overall structure.
The Sn(IV) atom in the title compound, [Sn(CH(3))(2)(C(18)H(11)BrN(2)O(3))], shows a distorted cis-C(2)NO(2)Sn trigonal-bipyramidal coordination geometry, with an axial O-Sn-O angle of 155.27 (9)°. The presence of an intra-molecular O-H⋯N hydrogen bond between the amido N atom and hydr-oxy H atom in the Schiff base ligand helps to stabilize the overall mol-ecular structure.
In the crystal structure of the title compound, C(8)H(9)N(2) (+)·SCN(-), the nearly planar 2-methyl-benzimidazolium cation [r.m.s. deviation = 0.0123 (4) Å] is perpendicular to a mirror plane and the methyl H atoms are disordered about the mirror plane with equal occupancies. The thio-cyanate anion also lies on a mirror plane. N-H⋯N hydrogen bonds link the components into an infinite chain along the b axis.
In the title compound, [Cu(C(21)H(22)N(2)O(2))], the cyclo-hexyl ring adopts a chair conformation with the two imine groups linked at equatorial positions. The Cu(II) ion is coordinated by two N atoms and two O atoms from the bis-Schiff base ligand in a slightly distorted square-planar geometry. The dihedral angle between the two benzene rings is 45.89 (9)°. The crystal structure is devoid of any classical hydrogen bonds. However, inter-molecular C-H⋯O inter-actions are present and stabilize the structure.
The five-coordinate Sn(IV) atoms in the two crystallographically independent mol-ecules of the title compound, [Sn(C(4)H(9))(2)(C(19)H(13)ClN(2)O(3))], are in distorted cis-C(2)NO(2)Sn trigonal-bipyramidal coordination environments. The tridentate dianion of the Schiff base, N'-[1-(5-chloro-2-oxidophen-yl)ethyl-idene]-3-hy-droxy-2-naphtho-hydrazide, displays inter-molecular O-H⋯N hydrogen bonding, which stabilizes the overall compound.
In the title compound, [Sn(C(4)H(9))(2)(C(11)H(12)BrNO(4))], the Schiff base ligand chelates to the Sn(IV) atom through the two deprotonated hy-droxy groups, as well as through the N atom, to confer an overall cis-C(2)SnNO(2) trigonal-bipyramidal geometry at the Sn(IV) atom [C-Sn-C = 129.92 (9)°]. The remaining methyl-enehy-droxy groups engage in O-H⋯O hydrogen bonding with the O atoms of adjacent mol-ecules, leading to infinite supra-molecular chains propagating in [001].
The title compound, [Sn(C(6)H(11))(3)(C(17)H(25)O(3)S)], exists as a monomeric mol-ecule with the Sn(IV) atom in a distorted tetra-hedral C(3)O coordination geometry. The presence of two bulky tert-butyl groups on the carboxyl-ate prevents any hydrogen-bonding inter-actions involving the hy-droxy group.
In the crystal structure of the title compound, C(8)H(9)N(2) (+)·SCN(-)·C(8)H(8)N(2), the three components are linked by inter-molecular N-H⋯N and N-H⋯S hydrogen bonds into infinite chains along the c axis.
The Schiff base mol-ecule in the title compound, C(14)H(11)BrN(2)O(4)·H(2)O, is almost planar with an r.m.s. deviation for the non-H atoms of 0.16 Å. In the crystal structure, the Schiff base mol-ecules and the water mol-ecules are linked together by inter-molecular N-H⋯O and O-H⋯O hydrogen bonds, leading to layers parallel to the bc plane. An intra-molecular O-H⋯N hydrogen bond involving the imine N atom and a hy-droxy substituent is also observed.
In the title compound, [CdCl(2)(C(13)H(19)N(3)O)], the Cd(II) ion is penta-coordinated with the N,N,O-tridentate Schiff base 2-{[2-(piperazin-4-ium-1-yl)eth-yl]imino-meth-yl}phenolate ligand and two Cl atoms in a highly distorted square-pyramidal geometry; the piperazine ring adopts a chair conformation. In the crystal structure, adjacent mol-ecules are linked together via N-H⋯O and N-H⋯Cl hydrogen bonds, forming infinite layers parallel to the ab plane. The layers are further connected through C-H⋯Cl inter-actions into a three-dimensional network.
In the structure of [Cu(C(17)H(14)N(3)S(2))(2)]·2C(3)H(7)NO, the Cu atom (site symmetry ) is N,S-chelated by the two deprotonated Schiff-base anions that define a distorted square-planar geometry. An N-H⋯O hydrogen bond links the mononuclear complex to the DMF solvent mol-ecules.
In the title compound, [Ni(C(17)H(14)N(3)S(2))(2)]·2C(3)H(7)NO, the Ni atom (site symmetry ) is N,S-chelated by two deprotonated Schiff base anions in a distorted square-planar geometry. The dihedral angle between the aromatic ring planes within the ligand is 86.37 (13)°. In the crystal structure, an N-H⋯O hydrogen bond links the complex to the dimethyl-formamide solvent mol-ecule.
The asymmetric unit of the title compound, C(26)H(25)N(3)O(2)S(2), contains two independent mol-ecules, which are linked by a pair of N-H⋯S hydrogen bonds, forming a dimer.
In the crystal of the title compound, C(17)H(15)N(3)S(2)·0.5C(2)H(6)O, the mol-ecules are linked by a pair of N-H(aliphatic)⋯S hydrogen bonds across a center of inversion, forming a dimer. The ethanol solvent mol-ecule, which is statistically disordered about a crystallographic twofold rotation axis, accepts an N-H(aromatic)⋯O hydrogen bond; the hydr-oxy group of the solvent mol-ecule is not engaged in hydrogen bonding.
In the title compound, C(18)H(17)N(3)S(2), the dihedral angle between the planes of the aromatic ring systems is 83.63 (16)°. In the crystal structure, inversion dimers occur, linked by pairs of N-H⋯S hydrogen bonds.
The two aromatic parts of the title mol-ecule, C(16)H(12)BrN(3)O(4), are connected through a conjugated -CH=N-NH-C(O)- fragment to furnish an almost planar mol-ecule. Adjacent mol-ecules are linked by N-H⋯O and O-H⋯O hydrogen bonds into a three-dimensional network. An intramolecular O-H⋯O link also occurs.
The C(10)H(8)N(3)S(2) portion of the title mol-ecule, C(17)H(15)N(3)S(3), is nearly planar (r.m.s. deviation 0.05 Å); this unit and the phenyl ring subtend an angle of 114.5 (2)° at the methyl-ene C atom.
The two aromatic parts of the title compound, C(16)H(13)ClN(3)O(4), are connected through a conjugated -CH=N-NH-C(O)- fragment, giving an almost planar mol-ecule (r.m.s. deviation 0.08 Å). In the crystal structure, adjacent mol-ecules are linked by N-H⋯O and O-H⋯O hydrogen bonds into a three-dimensional network.